British, informal. : just as a way to have fun She entered the race for a lark.

What does it mean to be called a lark?

A lighthearted, fun episode is a lark. ... A lark is also a kind of songbird. Using lark to describe carefree fun might come from 1800s sailors' slang, skylark, to describe playing in the rigging of the ship, up high like a lark.

Why do we say on a lark?

Something done on a lark has not been planned, but may be considered irresponsible in a fun way and childlike. The word lark in the term on a lark is used to mean frolicking or playing. ... It may date back to the Old Norse word leika which means to play.